Improvement in heating-stoves



J. S. VAN BUREN.

Hot-Air Furriace.

Patented May 7, 1867.

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J. S. VAN RUBEN, OF SOUTH TROY, NEW YORK..

Letters Patent No. 64,599, dated Illay 7, 1867.

IMPROVEMENT IN HEATING-STOVE.

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TO ALL WHOM IT MAY CONCERN:

Be it known that L J. S. VAN BUREN, of South Troy, in the county ofRensselacr, andState of New York, have invented a new and usefulImprovement in Hot-Air Furnace; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable those skilled 1n the art to malioand use the same, referencebeing had to the accompanying drawings, forming part of thisspecification.

This invention relates to the manner in which the heat-radiating surfaceof a hot-air furnace is increased,

so as to utilize the fuel and properly distribute the heated air; andthe invention consists in arranging a firebox within chambers in such amanner that it is surrounded by theairwhile the heated products ofcombustion may be made to pass around it on the outside in their passageto the chimney.

Figure 1 represents a vertical central section of the furnace, showingthe fire-box and flues, and the airchambers and air-passages. 1

Figure 2 is a horizontal section of fig. 1, through the line we, showinga plan of thefurnace, the air-fines, &c.-

Similar letters of reference indicate corresponding parts.

A represents the furnace proper, containing the fire-box; B is thefirebox; 0 represents a jacket surrounding the furnace; D D is the fluethrough which the smoke and products of combustio r'pass E representsthe pipes through which cold air enters; F is the ash-pit; G representsair-passages in the furnace, and H represents the pipes through whichthe heated air is discharged from the furnace at represents small holesthrough the base of the furnace, which holes are for the admission ofair. ,The furna cemay be placed on legs or stands, in which case theseholes would be unnecessary. The smoke and heated products of combustionpass from the furnace fire-box directly towards the upright line D; butby turning the damper cZ,.as seen in" the drawing, they are stopped andforced to enter and pass through the flue D, around the fire-box andacross the f top of the furnace, thus traversing nearly the wholeinterior portion of the furnace before "they pass into the flue D. Thejacket 0 entirely surrounds the sides and top of the furnace, while theair is admitted into the space between the jacket and the furnacethrough small holes 6 in the upper part of the base. The air whichenters through the pipes E-into the chamber E has free access to all theheat-radiating surface withinthe chambers E and A, from which it passesinto the hot-air chamber J, and passes out through the pipes H. It willbe seen that the air passes over a very large heat-radiating surface,and that as the fire-box and fines are arranged very little of the heatgenerated can be wasted. It is well known that air is a bad conductor ofheat, and that it is necessary for each particle to come in contact witha metallic or other heating surface to render it sufficiently hot forwarming purposes. It is of the first importance, then, that theheat-radiating surface should be as large as possible. The superioradvantages of this arrangement in this particular will at once beapparent. Suitable apertures are made through the jacket for theintroduction of fuel and removal of ashes, and the fire-box is adaptedto the use of either wood or coal as fuel.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The arrangement of the hot-air chambers E, A, and J, in combinationwith the fire-box B.

" 2. I claim the flue D, surrounding the firc box, substantially asshown and described.

3. I claim the jacket 0. constructed substantially as described, incombination with the furnace A and the flue D.

J. S. VAN BUREN.

Witnesses:

HENRY VAN Bonus, W. B. MILLS.

